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The Brain module reads the “few white spots” on Stina’s brain MRI as evidence that systemic inflammation crossed a barrier built to keep it out. This page pairs that diagnostic logic with the literature behind it — so it stands as both a lived experience and a research-supported case. It also carries a second story: my mother’s. The brain is where this disease took the most from my family, and I have chosen to tell that here rather than leave it out.
ARRIVED HERE FROM A SEARCH?
If you were looking up one of these, you’re in the right place.
This page belongs to a teaching case built around familial Mediterranean fever (FMF), an IL-1β-driven autoinflammatory disease. If you found it while searching a brain finding — for a patient, or for someone you love — the case is a valid, evidence-anchored starting point.
Jump to it:
White matter hyperintensities
IL-1β & the blood brain barrier
Aseptic meningities in FMF
Migraines & brain fog
Meningioma
Placeholder
What this case is
A brain MRI ordered for headaches and “brain fog” came back with scattered white-matter hyperintensities — “more than expected for age” — and an impression of “probably small-vessel changes or migraine.” No one asked what was driving them. The Brain module refuses that shrug. Put the spots beside the rest of the chart — a lifetime of periodic fever beginning in childhood, years of headaches and cognitive fog, and blood that runs high in IL-1β and IL-6 even between attacks — and the reading changes: the brain is not a bystander to this disease but another organ it reaches. Stina is me. The scan read as noise was my scan, and it was read wrong.
Why the logic holds
Familial Mediterranean fever has a documented neurological footprint: systematic reviews now catalogue headache as its most common neurological symptom, alongside demyelination, seizures, and cerebrovascular events.1,2 Case series describe central-nervous-system involvement and white-matter change,3,4 and FMF is a recognized, if rare, cause of recurrent aseptic meningitis.5,6 The mechanism is coherent: IL-1β, the cytokine at the center of FMF, increases blood-brain-barrier permeability in experimental models,7,8 which is how a disease of the blood becomes a disease of the brain. I flag honestly what the evidence does not yet firmly show: much of the FMF white-matter data is case-series-level, and rigorous evidence for FMF-specific “brain fog” is still thin. The direction is clear; the certainty is still being built.
Why it’s useful
If you reached this page searching white-matter hyperintensities, neuroinflammation, aseptic meningitis, or meningioma, that is the page doing its job: recurrent, “unrelated” brain findings in a patient with periodic fever deserve to be read as one story, not filed as incidental aging. And this is the module where I tell you about my mother — because pattern-blindness in the brain is what cost my family the most, and because the whole reason I turned my own scans into a course is so that someone reads the next patient’s in time.
Each step of the case, and the literature behind it
Spots on the scan
Parts 1, 6 · Chart Clue #10
Age-excessive white-matter hyperintensities in a patient with sustained high IL-1β/IL-6 reflect neuroinflammation reaching the brain — not simply small-vessel aging.
SUPPORTING EVIDENCE
- Neuro involvement in FMF, systematic review 2025 · FMF & CNS involvement (case series)FMF white-matter data is largely case-series level
Headache & “brain fog”
Parts 3, 6
Headache is the most common neurological symptom of FMF; the cognitive fog is plausibly a second readout of the same neuroinflammation.
SUPPORTING EVIDENCE
- Pediatric Rheumatology systematic review 2025 · Neuro manifestations, genotype–phenotype 2020rigorous FMF cognitive-dysfunction evidence is thin
The wall breached
Parts 4, 5
A normally sealed blood-brain barrierA selective barrier that prevents harmful substances from entering the brain. keeps blood-borne cytokines out; sustained IL-1β increases its permeability, letting systemic inflammation become neuroinflammation.
SUPPORTING EVIDENCE
- IL-1β disrupts the BBB (Wnt/β-catenin) 2023 · IL-1β & BBB disruption, PLOS ONE 2014general BBB mechanism, not FMF-specific
Aseptic meningitis
Neuro-FMF differential
FMF is a recognized cause of recurrent aseptic (sterile) meningitis — the same “inflammation without infection” that defines the disease, now inside the meninges(singular: meninx) – Protective membranes surrounding the spinal cord and brain..
The fever set-point
Part 2 · the Intro to the Human Body module callback
The childhood fevers that opened the case trace to the hypothalamic set-point reset by IL-1β — the same cytokine now implicated in the brain findings.
SUPPORTING EVIDENCE
My mother’s meningioma
Personal
Meningiomas are hormone-sensitive tumors that can grow during and after pregnancy, and their microenvironment is populated by monocytes/macrophages responsive to IL-1β. Whether chronic FMF inflammation contributed to my mother’s tumor is a family hypothesis, not established factA statement based on direct observation that is repeatedly confirmed..
SUPPORTING EVIDENCE
- Tumor-associated macrophages in meningioma 2025 · Macrophage IL-1β in the tumor microenvironment 2023 · Progesterone receptor in meningioma 2021 · Meningioma growth in pregnancy 1989 · Tuberculum sellae meningioma 2022microenvironment biology — NOT evidence FMF causes meningioma
THE INTERGENERATIONAL TRAUMA OF FMF
My mother had a meningioma at the sella turcicaSaddle-like depression in sphenoid that holds the pituitary gland. — the small saddle of bone that cradles the pituitary, where a slow-growing tumor presses on the optic nerves and the hormonal heart of the brain.13 She had three surgeries for it. In 2004 it came back, and she made a decision I only understood later: she chose not to treat it, and not to tell anyone.
I don’t believe it was ever separate from the rest. My mother carried the same disease I do, and hers began after she was pregnant with me. Meningiomas are hormone-sensitive — they carry progesteroneA hormone that supports pregnancy and regulates the menstrual cycle. receptorsProteins located on the surface or inside cells that bind specific molecules (e.g., neurotransmitter and are known to grow during and after pregnancy11,12 — and their microenvironment is built in part from monocytes and macrophages, the very cellsThe basic structural and functional units of life. that answer to IL-1β, the signal at the center of familial Mediterranean fever.9,10 I can’t prove that a lifetime of inflammation fed that tumor, and I won’t pretend the literature says more than it does. But I have watched this disease reach organ after organ, and I know she died in 2010 of multi-organ failure — the way untreated FMF so often ends, through amyloid laid down in one organ after another.14,15
I know about the tumor because I found her MRIs — 2004, 2006, and the last one in 2008 that said, in the flat language of radiology, that she had only a few years left. She never showed them to me. In 2009 she came to visit and stayed a few weeks, and she brought me boxes of my childhood — keepsakes she had saved and was quietly giving back. At the time I thought she was being sentimental. She knew. She was saying goodbye in the only language that didn’t require her to say it out loud.
So if you have read this far and it breaks your heart, let it do something. My mother’s disease was readable, and no one read it in time; her tumor grew in the dark because she had stopped believing anyone would look. If a patient in front of you carries this pattern — the fevers, the inflammation that never settles, the family history that keeps getting waved off — do the thing no one did for her. Look. Order the test. Connect the pieces while there is still time to change the ending. That is the only thing I know how to do with this grief: hand it to you as a reason to be the person who looks.
THE INTERGENERATIONAL TRAUMA OF FMF
Stina is not a composite. Stina is me. The headaches, the pressureThe force exerted by gases in the respiratory system, affecting airflow and gas exchange. that worsens when I lie flat, the “brain fog” I was told to ignore, and the white spots a radiologist called “probably nothing” — those are mine, and they were real long before anyone connected them to the inflammation driving the rest of me. I put my own brain MRI into a course because a scan read as noise is a scan read wrong.
This page is built to hold both truths at once. The lived experience — being disbelieved, and watching my mother disappear into a diagnosis no one assembled in time — is the part a chart never records and a textbook rarely teaches. The research support is what earns the case a place in a science course: every mechanism here can be traced to a primary source, and where the evidence is thin or the link is only a hypothesis, I have said so plainly. If you are a clinician who found this page from a patient rather than a syllabus, treat it that way — as a validated starting point that respects the patient’s experience and then hands you the literature.
References & where to go deeper
Grouped by the part of the argument they support.
Links verified August 2026.
FMF and the brain
- 1.Neurological involvement in children with familial Mediterranean fever: a systematic review. Pediatric Rheumatology 2025.
- 2.Prevalence of neurological manifestation in FMF patients: systematic review & meta-analysis. Neurological Sciences 2025.
- 3.Familial Mediterranean fever and central nervous system involvement: a case series. Medicine (Baltimore) 2010.
- 4.Neurological manifestations in FMF: a genotype–phenotype correlation study. 2020.
- 5.FMF presenting with recurrent aseptic meningitis: a case report. Pediatrics & Neonatology 2016.
- 6.FMF in the differential diagnosis of recurrent aseptic meningitis. Internal Medicine 2020.
Mechanism — IL-1β and the blood-brain barrier (general)
My mother’s story — meningioma & AA amyloidosis
- 9.Tumor-associated macrophages in meningiomas. Acta Neuropathologica 2025.
- 10.Macrophage IL-1β contributes to tumorigenesis via paracrine inflammasome activation in the tumor microenvironment. Front Immunol 2023 (general tumor biology).
- 11.Progesterone receptor expression in meningiomas: pathological and prognostic implications. 2021.
- 12.Rapid growth of a meningioma during pregnancy: relationship with estrogen and progesterone receptors. 1989.
- 13.Tuberculum sellae meningioma: surgical management and visual outcome. 2022.
- 14.FMF and renal AA amyloidosis — phenotype–genotype correlation, treatment and prognosis. 2003.
- 15.Renal involvement in AA amyloidosis: clinical outcomes and survival. 2013.
Standing reference anchors
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All pages for Module 10 — The Brain & the Blood–Brain Barrier
10.0 Module Overview
10.1 Spots on the Scan
10.2 The Command Center
10.3 Cushions and Currents
10.4 The Wall
10.5 Breaching the Wall
10.6 White Matter Under Fire
10.7 Neuroinflammation
10.8 Conclusion and Assessment
10.9 Evidence Behind the Case
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List of terms
- blood-brain barrier
- meninges
- fact
- sella turcica
- progesterone
- receptors
- cells
- pressure
- development